Transcription of Lightning and surge protection - basic principles
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Lightning and surgeprotection - basic principles October 2016AN904-1002 Rev IApplication noteMTL surge protectionCONTENTS ..Page1 INTRODUCTION ..1 The need for surge protection ..1 surge protection devices (SPDs) ..12 Lightning ..2 Introduction ..2 Generation of atmospheric discharges ..2 Lightning conductors and buildings ..2 Lightning -induced transients ..3 Transient specifications ..33 surge protection COMPONENTS ..4 Introduction ..4 Arc or carbon spark gaps ..4 Gas discharge tubes ..4 Zener diodes ..5 Metal oxide varistors ..5 Fuses ..6 surge relays.
lightning strikes is currently on the increase globally. The magnitude of lightning discharges around the world have been measured from 2000A to more than 200kA, with rise times to peak current of less than 10µs. The variation in magnitude and rise times follows the ‘log-normal’ distribution typical of many natural phenomena.
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